06139750 is referenced by 32 patents and cites 31 patents.

A desalination plant is disclosed which includes a pump for pumping water at a pressure of between 50 and 65 Bar to a generally cylindrical filter element which includes a plurality of reverse osmosis membranes defining salt passages. Immediately upstream of the filter element there is a disc with a plurality of holes in it. The disc forms an obstruction which causes a pressure drop between the upstream side thereof and the downstream side. It also divides the water flow into a series of separate streams which impinge on the end of the filter element and flow into the salt passages. The water downstream of the obstruction is not only at a lower pressure than the water upstream of the obstruction but also is flowing turbulently. The disc and filter element are in a cylindrical casing. The brine which emerges from the filter element, and which is still at a substantial pressure, can be fed through a device such as a Pelton wheel to recover some of the residual energy therefrom.

Title
Water desalination
Application Number
8/817235
Publication Number
6139750
Application Date
April 10, 1997
Publication Date
October 31, 2000
Inventor
William Graham
Western Cape
ZA
Agent
Pollock Vande Sande & Amernick R L
Assignee
Garfield International Investments
VG
IPC
B01D 61/00
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